Dr Kevin McIsaac of Australian analyst firm IBRS research is one of those sceptical of storage virtualisation. Even once you manage to pin down a definition - which is something the industry struggles with, he says - it doesn't amount to much.
According to McIsaac, the type of storage virtualisation that vendors tout tends to be a layer at the host or at the network that allows storage from different vendors to talk to one another, pooling many disparate physical disk drives into one abstract body of storage.
"So you've got an EMC device and you've got a something else over there, and we'll put this bit of 'magic pixie dust' over the top of it and it will all look the same and it'll be easy to manage and improve utilisation."
But don't believe the hype, he says:
"Like I'll believe that. I'm very negative about storage virtualisation."